US7458609B2 - System and method for adjustably positioning a restraint system in a motor vehicle - Google Patents

System and method for adjustably positioning a restraint system in a motor vehicle Download PDF

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Publication number
US7458609B2
US7458609B2 US11/163,904 US16390405A US7458609B2 US 7458609 B2 US7458609 B2 US 7458609B2 US 16390405 A US16390405 A US 16390405A US 7458609 B2 US7458609 B2 US 7458609B2
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US
United States
Prior art keywords
sensor
anchor
seat
adjustment mechanism
belt retractor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US11/163,904
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English (en)
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US20070096450A1 (en
Inventor
Per Gyllenspetz
Bjorn Lundell
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Ford Global Technologies LLC
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Ford Global Technologies LLC
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Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to US11/163,904 priority Critical patent/US7458609B2/en
Assigned to VOLVO CAR CORPORATION reassignment VOLVO CAR CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GYLLENSPETZ, PER, LUNDELL, BJORN
Assigned to FORD GLOBAL TECHNOLOGIES, LLC reassignment FORD GLOBAL TECHNOLOGIES, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VOLVO CAR CORPORATION
Priority to EP06123091A priority patent/EP1783014B1/de
Priority to DE602006020388T priority patent/DE602006020388D1/de
Publication of US20070096450A1 publication Critical patent/US20070096450A1/en
Application granted granted Critical
Publication of US7458609B2 publication Critical patent/US7458609B2/en
Expired - Fee Related legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/02—Semi-passive restraint systems, e.g. systems applied or removed automatically but not both ; Manual restraint systems
    • B60R22/03—Means for presenting the belt or part thereof to the wearer, e.g. foot-operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/18—Anchoring devices
    • B60R22/20—Anchoring devices adjustable in position, e.g. in height

Definitions

  • the present invention relates generally to occupant restraint systems for use with a passenger seating area in motor vehicles, and more specifically to a restraint system for assisting an occupant in fastening a seat belt while positioned in a vehicle seat.
  • Occupant restraint belts are fitted to most types of passenger vehicles in order to protect vehicle occupants from injury during a crash or other abrupt deceleration of the vehicle.
  • One limitation to the effectiveness of modern seat belts is that they require a voluntary and optional act by the occupant to fasten the belt properly around their body.
  • Some persons do not use their vehicle's seat belts because they find it difficult or inconvenient to don the seat belt.
  • This difficulty in donning the belt is sometimes due to the fact that when the buckle is positioned in the unfastened condition, it must assume a stowed position in which it does not obstruct the occupant while entering or exiting the vehicle. This condition is most prevalent in the rear passenger seating area of the vehicle. Consequently, the seat belt is typically configured so that it is pulled to the rear by a retractor mechanism. Further, the buckle, which is adapted to receive a latch or other portion of the belt, may be difficult to see and/or reach when position in the seat bottom.
  • the present invention provides a restraint system for use in a passenger seating area of a motor vehicle includes a seat belt assembly having a webbing extending between a lower anchor and a belt retractor positionable across the body of an occupant.
  • a sensor is coupled with the belt retractor to sense a change in the condition of the seat belt assembly.
  • An inboard anchor disposed opposite the seat belt assembly includes a buckle element adapted to engage and secure a latch element on the webbing.
  • An adjustment mechanism connected to the inboard anchor is configured to move the anchor between a stowed position and a deployed position.
  • a controller monitors the sensor to detect change in the condition of the seat belt assembly and instructs the adjustment mechanism to position the inboard anchor between the stowed and deployed positions.
  • a method of moving an inboard anchor of a restraint system associated with a seat of a motor vehicle from a stowed position to a deployed position includes detecting a change in the condition of a belt retractor of a seat belt assembly with a first sensor.
  • the first sensor transmits a signal to a controller indicating a change in the seat belt assembly condition.
  • the controller transmits a signal to an adjustment mechanism connected to the inboard anchor to move the anchor from a first or stowed position to a second or deployed position.
  • FIG. 1 is a side view of a restraint system for use in a passenger seating area of a motor vehicle in accordance with the present invention
  • FIG. 2 is a perspective view of the restraint system in combination with a vehicle seat of the present invention
  • FIG. 3 is a perspective view of the vehicle seating area with the restraint system in a stowed position
  • FIG. 4 is a perspective view of the vehicle seating area with the restraint system in an activated or deployed position
  • FIG. 5 a is a perspective view of an adjustment mechanism in combination with an inboard anchor in accordance with the present invention.
  • FIG. 5 b is a cross-sectional view taken of the adjustment mechanism in accordance with the present invention.
  • FIG. 6 is a perspective view of the vehicle seating area with the restraint system in a latched position
  • FIG. 7 is a perspective view of the vehicle seating area with the restraint system in a secured position.
  • a restraint system in accordance with the present invention is shown installed in a vehicle having a passenger seating area. It is understood that the restraint system may be used in either the front or rear passenger seating areas. For purposes of this disclosure, the restraint system will be installed in the rear passenger seating area.
  • Restraint system 10 includes an associated seat belt assembly 12 incorporated in or disposed adjacent to a vehicle seat 14 or seating area.
  • Vehicle seat 14 is of the type well known in the art.
  • Seat 14 includes a generally upright seat back 16 for supporting the torso of a seated occupant 18 (indicated in phantom lines) and a generally horizontal seat bottom or cushion 20 projecting forward from the bottom portion of the seat back 16 for supporting the pelvis and thighs of the occupant 18 .
  • the vehicle seat 14 will be referred to herein as having an inboard side and an outboard side, these terms referring to the sides of the seat adjacent to a center of a vehicle and an exterior side of a vehicle respectively, as is the case if the seat is located on the left side of the vehicle.
  • the belt assembly 12 comprises a length of flexible webbing 22 having an upper end secured to an upper anchor 24 adjacent the upper outboard portion 26 of the seat back 16 , and a lower end secured to a lower anchor 28 adjacent the rear portion of the seat bottom 20 .
  • a locking or latch element 30 such as a latch plate, slides along the webbing 22 to allow adjustability, and is lockingly engageable with a latch element an inboard anchor (not shown) located adjacent the rear, inboard side of the seat bottom 20 .
  • the webbing 22 defines a lap belt and a shoulder belt in a manner well known in the art to restrain the occupant 18 in the event of a crash or other abrupt deceleration of the vehicle.
  • the lap belt and shoulder belt may be formed as separate lengths of webbing connected by a fitting (not shown) that includes a buckle element engageable with the inboard anchor. It is also contemplated that belt restraint system 10 may be used with a three point, four point or five point belt assembly.
  • the upper anchor 24 preferably comprises a belt retractor 32 that may be housed within seat back 16 (as shown), or mounted to a portion of the vehicle structure such as a roof rail or C-pillar as is well known in the restraints art.
  • the belt retractor 32 is operative to retract the webbing 22 when it is not fastened about the occupant 18 , provide for adjustment of the length of the belt for varying-sized seat occupants, and properly position the seat belt restraint system, as is well known in the art.
  • the belt retractor 32 may include load limiter and/or belt pretensioner devices (not shown) of the type well known in the restraints art.
  • the belt assembly Prior to an occupant being seated in seat 14 , the belt assembly is placed in a stowed position or first position, in which the belt is unfastened and belt retractor (not shown) draws webbing 22 upward so that it extends in a substantially straight line between the upper and lower anchors. In this position, the belt assembly does not interfere with the seat occupant entering or exiting the vehicle.
  • a buckle element 34 connected to an inboard anchor is disposed adjacent the seat bottom 20 . Buckle element 34 is configured to receive and secure latch element 30 .
  • FIGS. 1 and 4 shows restraint system 10 in an activated or deployed position.
  • the occupant 18 grasps the webbing 22 or latch element 30 and pulls it across his/her body to fasten latch element 30 to the buckle element 34 on the inboard anchor 36 .
  • Movement of the belt from the stowed position to the second or deployed position requires some amount of the webbing 22 to be drawn out of the belt retractor 32 , which requires the occupant to draw the webbing with sufficient force to overcome the winding force of the retractor 32 .
  • Restraint system 10 includes a controller 40 that monitors the condition of the seat belt assembly 12 and buckle element 34 of restraint system 10 .
  • One or more sensors 42 , 52 are disposed adjacent the belt retractor 32 and buckle element 34 .
  • Sensors 42 , 52 are configured to monitor the condition of the belt assembly 12 and buckle element 34 .
  • Sensor 42 monitors the condition of belt retractor 32 to determine whether webbing 22 is drawn from a spooled condition in retractor 32 to a use position.
  • the senor 42 transmits a signal to the controller 40 indicating a change in condition in the belt retractor 32 .
  • controller 40 instructs an adjustment mechanism 44 operatively connected to the inboard anchor 36 to move the anchor from the first or stowed position to at least a second or deployed position. In the deployed position, the inboard anchor 36 is moved forward relative to the seat back 16 and above the seat bottom 20 .
  • the controller may monitor conditions of the seat and the seat belt assembly through the use of other vehicle systems, such as a seat weight sensor, a door status indicator switch, a buckle status switch, and an ignition switch. For example, the controller may transmit a signal to adjust the position of the inboard anchor in response to a “seat occupied” indication from seat weight sensor, and/or a “door closed” indication from door condition sensor, and/or in response to an “on” indication from ignition key.
  • Sensor 42 may detect the condition of belt retractor using a variety of sensing methods. For example, a sensor may be incorporated into the belt retractor to detect rotational movement of the retractor. Alternatively, a photocell may be disposed adjacent the belt retractor to sense when the webbing is spooled out from the retractor. In another embodiment, a microswitch senses a change in the diameter of the spooled belt, such that a decrease in diameter indicates a change in condition.
  • an adjustment mechanism 44 is coupled to the inboard anchor 36 assists in positioning the anchor 36 between a first or stowed position to at least a second or deployed position.
  • adjustment mechanism 44 includes a carrier 46 which receives the inboard anchor 36 and translates between the stowed position and deployed position along a drive screw 48 .
  • drive screw 48 is rotated by a motor 50 .
  • the controller transmits a signal to the motor 50 to move the inboard anchor 36 above a top portion of the seat bottom 20 and forward of the seat bottom 16 , presenting the buckle element 34 for convenient securement for the occupant to insert latch element 30 .
  • the adjustment mechanism comprises a piston adjusted through a cylinder by a gas pressure source, illustrated generally by block identified by numeral 47 .
  • the controller would send a signal to a pressure source to adjust the position of the inboard anchor.
  • a valve controls the flow of pressurized air from the pressure source to the piston traveling in a cylinder, allowing a smooth transition of the buckle element from the stowed position to the deployed position. It is contemplated that a variety of adjustment mechanisms known in the art may also be used to adjust the position of the inboard anchor.
  • restraint system 10 is shown in the deployed or activated condition.
  • occupant inserts latch element 30 on webbing 22 into buckle element 34 on inboard anchor 36 such that webbing 22 of belt assembly 12 extends adjacent or above the occupant's torso and upper surface of the occupant's thigh.
  • the buckle element 34 is positioned above the seat bottom 20 so that it does not cause any discomfort to occupant if it contacts the occupant's hip or thigh.
  • a sensor operatively connected to the buckle element transmits a signal to the controller indicating that the seat belt is properly fastened.
  • the controller then activates adjustment mechanism to move the inboard anchor 36 from the deployed position to the stowed position adjacent to or below the seat bottom 20 .
  • the seat belt assembly 12 will restrain an occupant positioned in the vehicle seat 14 . It is contemplated that the user may be able to manually press the latch element and inboard anchor downward into the stowed condition. It is also contemplated that the adjustment mechanism may move the inboard anchor from a deployed position to the stowed position based on the detection of various conditions.
  • the inboard anchor may return to a stowed position based on the expiration of a set time period.
  • activation of the vehicle ignition circuit, detection of a child seat in the seating area, or other appropriate condition may cause the inboard anchor to return the stowed position.
  • the inboard anchor could be returned to the stowed position based on feedback from another sensor in the vehicle, such as a “door closed” indication from door condition sensor or in response to an “on” indication from ignition key.
  • the adjustment mechanism may move the inboard anchor to at least one deployed position from the stowed position after the buckle element receives the latch element based on detection of a secondary condition by a vehicle system sensor. For example, should a seat occupancy sensor detect the presence of an occupant in the seat, the inboard anchor would be moved from the stowed position to a deployed position when the controller detects feedback from another sensor in the vehicle, such as a “door open” indication from door condition sensor or in response to an “off” indication from ignition key.
  • a method of moving an inboard anchor of a restraint system associated with a seat of a motor vehicle from a stowed position to a deployed position is described in more detail below.
  • a sensor provided adjacent the belt retractor detects a change in the condition of the retractor based on the movement of the webbing of the seat belt assembly. The sensor transmits a signal to a controller indicating the change in the seat belt assembly condition.
  • the controller transmits a signal to an adjustment mechanism operatively connected to the inboard anchor to move the anchor from a first or stowed position to a second or deployed position.
  • a sensor disposed adjacent a buckle element monitors the condition of the buckle element to detect whether the latch element on the webbing of the belt assembly is secured thereto. When the sensor detects the presence of the latch element in the buckle element, the sensor transmits a signal to the controller. The controller thereby transmits a signal to the adjustment mechanism to move the inboard anchor from the deployed position to the stowed position to secure the occupant positioned in a vehicle seat within the restraint system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)
US11/163,904 2005-11-03 2005-11-03 System and method for adjustably positioning a restraint system in a motor vehicle Expired - Fee Related US7458609B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/163,904 US7458609B2 (en) 2005-11-03 2005-11-03 System and method for adjustably positioning a restraint system in a motor vehicle
EP06123091A EP1783014B1 (de) 2005-11-03 2006-10-27 Rückhaltesystem für einen Kraftfahrzeug
DE602006020388T DE602006020388D1 (de) 2005-11-03 2006-10-27 Rückhaltesystem für einen Kraftfahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/163,904 US7458609B2 (en) 2005-11-03 2005-11-03 System and method for adjustably positioning a restraint system in a motor vehicle

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US20070096450A1 US20070096450A1 (en) 2007-05-03
US7458609B2 true US7458609B2 (en) 2008-12-02

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EP (1) EP1783014B1 (de)
DE (1) DE602006020388D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090094807A1 (en) * 2007-10-16 2009-04-16 Takata Corporation Seatbelt buckle apparatus
US20110121630A1 (en) * 2009-11-24 2011-05-26 Nissan Technical Center North America, Inc. Vehicle seating apparatus
US20200079317A1 (en) * 2018-09-12 2020-03-12 Ford Global Technologies, Llc Vehicle buckle assembly

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967339B2 (en) * 2009-01-13 2011-06-28 GM Global Technology Operations LLC Active material based safety belt buckle presenter
KR20110025532A (ko) * 2009-09-04 2011-03-10 현대자동차주식회사 자동차용 시트 벨트 장치
FR2953470A3 (fr) * 2009-12-04 2011-06-10 Renault Sa Dispositif de bouclage d'une ceinture de securite a une place arriere d'un vehicule automobile
DE102011011779A1 (de) * 2011-02-18 2012-08-23 Trw Automotive Gmbh Steuerung für eine Sicherheitsgurt-Positioniervorrichtung sowie Sicherheitsgurt-Positioniervorrichtung
JP6791023B2 (ja) 2017-06-06 2020-11-25 トヨタ自動車株式会社 シートベルト制御装置
CN112918425B (zh) * 2021-03-30 2022-07-08 东风汽车有限公司 安全带锁扣组件及其控制方法和装置

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090094807A1 (en) * 2007-10-16 2009-04-16 Takata Corporation Seatbelt buckle apparatus
US20110121630A1 (en) * 2009-11-24 2011-05-26 Nissan Technical Center North America, Inc. Vehicle seating apparatus
US8414081B2 (en) * 2009-11-24 2013-04-09 Nissan North America, Inc. Vehicle seating apparatus with buckle positioning arrangement
US20200079317A1 (en) * 2018-09-12 2020-03-12 Ford Global Technologies, Llc Vehicle buckle assembly
US11180110B2 (en) * 2018-09-12 2021-11-23 Ford Global Technologies, Llc Vehicle buckle assembly

Also Published As

Publication number Publication date
DE602006020388D1 (de) 2011-04-14
EP1783014B1 (de) 2011-03-02
EP1783014A2 (de) 2007-05-09
US20070096450A1 (en) 2007-05-03
EP1783014A3 (de) 2007-12-19

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